Sponge mop head



FIG. 1 is a top perspective view of the sponge mop head according to our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a right side elevational view thereof. The left side elevational view is a mirror image thereof.

The broken lines represent, by way of illustration only, a mop handle extending from the sponge mop head, and form no part of the claimed design. 

The ornamental design for a sponge mop head, as shown and described. 